Razor



NOV. 22, 1932. I W 1,388,747

RAZOR Filed April 28, 1932 3 Sheets-Sheet 1 INVENTOR ATTORNEY Nov. 22,1932. H. SWAN 1,888,747

\ RAZOR Filed April 28, 1932 3 Sheets-Sheet 26 W10 3/, 5, gr;

INVENTOR Ai'ToRNEY Y Nov.- 22, 1932. H. SWAN f RAZ-OR Filed April 28,1932 s Sheets-Sheet 5 INVENTORY A13 ATTORNEY Patented Nov. 22 1932 irans'r rss'rA raNr- OFFICE:

may SWAALOF NEW roman. Y.

' :aAzoR Application filed April 28,

My invention relates to the razor art and .especially to'razors of thesafety type.

'macap In my copending application Serial N 0. 563,273 filed September17, 1931,.there are disclosed several forms of safety razor Whereispermanently secured to a relatlve- I I -ly stationary portion of therazor. A relatype for moving the cap into and out of blade This , Fig. 1is an elevational tivly rotatable portion of the handle is arranged toengage the cap for holding it in The present inblade clamping position.

a razor of this vention provides means in clamping-position by rotatingthe relatively rotatableportion of the handle. In this way the razor maybe disassembled by simply turning the rotatable portionoftlie handle.rotation first disconnects the handle from the cap and then causes thecap to be I rotated about its hinged connection withthe The razor: :maybe assembled again by turning the ro-' stationary portion of the razor.,

Icross -section, of a portion of the device shown in Fig. 1, butdifferent position; Fig. 5 is a top view, partially in cross-sec. tion,of a portion'of the device shown in Fig.4; Fig. 6 is an elevationalview, partially in with certain parts in a cross-section, of anotherembodiment of my invention; a

Fig. 7 is a cross-sectional view, taken on.

the line 7-7 of Fig. 6;

Fig. 8 is an end view of the device shown in F12. 6;

' e'rence character connection with the accompanying drawings,"

1932. Serial No. 607,905.

Fig. 9 is a cross-sectional view takenon the line9-9 of Fig. 6;

Fig. 10 is an elevational view,.partially in cross-section, of thedevice shown in Fig. 6,

but with certain of the parts in a different position ,1 g

Fig. 11 is an elevational view, partially in cross-section, of stillanother embodiment of my invention;

7 Fig. 12 is a cross-sectional view taken on the line 1212 of Fig. 11;

' Fig. 13 is a cross-sectional view'taken on the line '1313 of Fig. 11;

Fig. 14 is an elevational view partially in cross-section, of the deviceshown in Fig. 11, but with certain of the parts in a different position;and 1 Fig. 15 is a cross-sectional view taken on the line 15-15 of-Fig.14'.

Referring more particularly to Fig. 1, ref- 10 designates generally ,a

handle which comprises a first part 11 and a second part. 12, parts 11and 12 being rotatable relative to each other. Part- 11 is convenie'ntlymade in the form of a tube while part 12'is in the form of arod or shaft extending through tube 11. Parts 11 and 12 are ment. A knob14 is secured to one end of "shaft '12 and is soqlocated that it may beturned while tube ll is held stationary.

provided with a set of screw threads 13 so. that the two parts havethreadedengage-- Rigidly secured to the endof tube 11 is a 7 base member15. Base member 15 is formed itha' witha groove or channel 16 forslidably supporting a rack 17. Rack 17 is formed set of teeth18 on itslower face and another setof teeth 19 on its inner face.

An arm 20 is secured to the underside of base member 15 adjacent to,one. end thereof.v

Arm 20 is formed with an opening therethrough to receive a pin 21.Rigidly'secured to pin 21 'is forked end 22 .of an arm 23. A

gear 40 is also rigidly secured'to pin 21, or ma be secured directly toone prong of thefor edend 22.- The other end of'arm 23 is secured to am24. Cap 24 is provided with aperturesv or. s tions 26 carried .jecti'ons26' serve to position. the cap, and,

ots25 which receive projecby the base member 15. Probe explained later.

' between guard member 32 and cap 24.

screw threads 30 adapted to engage threads 29 on pin 28. This end ofshaft 12 is also provided with an integral collar or flange 31.

A guard member 32.is provided with openings '33 for receiving rojections26. The ard member is pre erably formed with guard teeth 34 and has acentral opening through which pin 28 is adapted to pass.

Opening 35 is small enough so that flange 31 on shaft 12 may not passtherethrough, but will bear against the under side of guard member 32.

Located on shaft 12 below flange '31 are I 5 several teeth 36. Theseteeth preferably do not extend all the way around the shaft in the formof a complete gear for reasons to These teeth are adapted to engageteeth 19 on rack 17. A razor blade '37 is adapted to be clam ed razorblade is formed with suitable apertures the razor for; any purpose,such-as to'receive projections 26 and in 28. The

- blade is preferably made of flexible material.

The operation of the razor above described is as follows:

Assume that the razor is in assembled position with a blade clamped in'place between the cap and the guard, as is shown in Figs. 1 through 3.If it is desired to disassemble and dry the blade or to replace theblade, tubular part 11 of the handle 10 is held one hand'while shaft 12is rotated by turn ing knob 14 with the other hand as though to unscrewit. This rotation causes shaft 12 to move downwardly with respect topart 11, f

' as viewed in Fig. 1. i This'movement also causes shaft 12 to beunscrewed from pin '28. Inasmuch as the pitch of threads 13 and 29 and30 is the same, the shaft 11 may be turned with respect to part 11 andpin 28 at the same time.

The teeth 36 on shaft 12 are so located that,

at the instant shaft 12 becomes disengaged from pin 28, teeth 36 aresomewhat higher than teeth 19 on rack 17 andthe last tooth,

designated 36a has just passed the teeth 19, the shaftbeing turned in aclockwise direction as seenin Figs. 2 and 5. Further rotation of shaft.12 causes itto move down still further and by the time the first tooth,designated 36?) has come around to teeth 19, 113-18 down far enough toengage one of these teeth. Further rotation of shaft 12 and teeth toclean 36 causes rack 17 to move to the left, as viewed in Fig. 1. "Thismovement causes gear 40, which engages teeth 18 on rackj17, to rotate ina counter-clockwise as gear 40 is rigidly secured to arm 23, eitherdirectly or through pin 21, cap 24 is caused the position shown in Fig.4. In this position blade 37 and guard member 32 may be removed.

When it is desired to reassemble the razor, guard position on basemember 15 and knob 14 is turned in the opposite direction; that is as toscrew knob 14 onto part 11. Teeth 36 being still in engagement withteeth 19 on rack 17, the rack is caused to move to the right and rotatesgear 40 in a clockwise direction, as illustrated. This causes cap 24 tobe rotated into blade clamping position. When cap 24 reaches thisposition tooth 36b disengages from teeth 19 and further rotation ofshaft 12 causes threads 30 to engage threads 29 on the pin 28. By thetime tooth 36a has come around to teeth 19,.the shaft 12 has been raisedsufiiciently so that tooth 36a is above the teeth19 and hence does noten-.

gage them.- As knob 14 is turned, flange 31 direction. Inasmuch 32 andblade 37 are placed inpropeu to rotate with respect to base member .15to is raised with the shaft 12 and forces guard member 32 upwardly andthus the blade 37 is clamped between the guard member and cap 24.Inasmuch as cap 24 is in engagement with shaft 12 by means of threads 29and 30, the cap cannot be displaced by guard mem ber 32 and blade 37being forced up against it.

In Figs. 6thr'ough 10, thereis illustrated a somewhat modifiedembodlment of m invention. The razor comprising this em odi-.

ment consists of a handle 10 made up of a tubular part 11 and a shaft12. Secured to "one end of part 11-.is a basemember 15. Base a rotatableshaft 42 member 15 supports which is provided with a bevelled gear 43 atits inner. end and another bevelled gear 44 at its outer end. A bevelledgear 45 meshes with gear 44 and is rigidly secured to pin 21 which isjournalled in arms 41 secured to or integral with base member 15. Theforked end 22'of arm'23 is also rigidly secured to pin 21. Cap 24, whichis rigidly secured to arm 23 in this, embodiment is not provided withopenings therethrough, but is formed with recesses 46 in its under face.These recesses are adapted to receive projections 26 Which,in thisembodiment, are not as high as were the projections shown in the firstembodiment. The central under side of cap 24 is provided with a pin 28on which are formed threads 29 adapted to engage threads 30.-

formed in the hollow end of shaft 12. Shaft 12 and tubular part 11havethreaded engagement in this embodiment in the same manner as shownat 13 in Fig: 1.

A guard member 32 provided with apex tures 33 is carried) by base member15.

blade 37 is adapted to be clamped between i is' provided with a knob 14guard member 32 and cap 24.

' A flange 31 is secured to the upper endof shaft 12 andbears againstthe under side of guard 32. On the under side of flange 31; is located aplurality'of bevelgear teeth 47. Gear teeth 47 do not form a complete.gear but comprise onlya few teeth, as was the casewith teeth 36 in thefirst embodiment.

The operation of is as follows: I Assuming the razor to be in assembledposition, as is shown in Fig. 6, rotation: of shaft the device justdescribed 12 causes the shaft to move downwardly, as

indicated by the arrow A, with respectto tubular part 11 and withrespect to pin 28., When the shaft has been turned far enough so thatthreads 29 and 30 are disengaged,

teeth 47 engage teeth on bevelled gear 43'and cause shaft.42 to rotate.This rotation is transmitted throughbevelled gears 44 and to pin 21which causes cap 24' to rotate with respectv to base member 15. --Thecap is rotated to the position shown in Fig. 10. In this'position theblade and guard may be removed. 'When' it is desired to reassemble therazor, the blade and guard are placed in positionon base member 15 andshaft 12 is turned in the opposite direction to that indicated by thearrow A. Inasmuch as teeth 47 arein engagement with bevelled gear 43this causes rotation of shaft 42 and cap 24 is ro tated until it comesto rest on-projections 26. At this point teeth 47 disengage from.

bevelled gear 43 and further rotation of shaft Th 12- causes threads 29and 30 to engage. Flange 31 forces guard 32and blade -37 upwardlyagainst cap 24, whichv is held from rotating dueto the fact that threads29 and 30 are in engagement.

the upper. end of shaft 12 for the same reason that teeth 36 did notextend all the, way around. Hence, shaft 12' may be turned a portion ofa turn and thus moved downwardly, between the time when; last tooth 47 aclears gear 43 and the time when first tooth 476 comes into engagementwith ear 43. This allows for an appreciable over apping before contactof tooth 47 b with the teeth of gear 43. If teeth 47 were disposed-allthe way around shaft 12, they would at first just touch the ends of theteeth on gear 43 and might slip over them before the shaft had turnedsufficiently to bring them down far enough to ac-. tually engage theteeth. .This would cause unnecessary wear and the gears mightpossiblyibecome jammed. s v

Afurther embodiment of my invention is' illustrated in Figs; 11 through15. In this embodiment the handle comprises 'a tubular part 11 and ashaft 12. One end of shaft 12 and the parts are formed with a set ofthreads 13 adapted 'to en gage eachother. fAnother set-of threads 50forkedend 22 the forked end 22 is formed on the parts Hand 12. Set ofthreads 50 has a greater pitch than does set 13.

These threads are so spaced on parts 11 and 12'that the threads of set50 come into engage- 1 ment immediately after the threads of set 13 havebecome disengaged.- The result isthat when the shaft 12 is being turnedso as to'lower it withrespect to tubular part 11, the shaft movesdownwardly a certain distance .with relation to part 11 for each turn ofthe'handle while threads 13 are in engagement, and moves a greaterdistance for each turn when threads 50 come into engagement. Obviously,threads 13 and threads 50 should not be in engagement at the sametimedue to the fact that they have a different pitch.

A base member 15 is rigidly secured to one end of tubular part 11. Basemember'15is formed with a slot 16 inwhichis slidably positioned a rack17. Rack 17 is provided with a recess 51. One end of rack. 17; is

formed with an'internal cam surface 52 which preferably has the outlinedisclosed in Figs.

11 and 14. Base member 15 is formed with an arm 20 having "a circularopening therethrough which receives a an arm 23 which is rigidly securedto a cap 24. Qnelof the prongs of of'arin 23 is provided with pin 21.Pin 21 supports the a pin 53 which is adapted to contact the cam surface52 of rack 17 Cap-14 is formed with recesses 25 for receivingprojections 26 carried by base member 15.

e cap is also provided with acentrally located pin 28 having threads 29formed thereon. Threads 29 are threads 30 formed in the 12. Threads 29and 30 have the same pitch as adapted to engage do' the threadscomprising theset 13., Teeth 47 do notextend all the way around Theupper end of shaft 12 is formed with-a flange31. -Located below flange31 is a single tooth 54 which is adapted to en age recess 51 formedinrack117. .In place 0 the single recess 51 and single. tooth 54 severalteeth 17, as shown in the embodiment illustrated in Figs. 1' through 5.

he various parts are spaced that threads 29 and 30 become disengaged atthe same time that the threads making up the set 13 become disengaged.In

during, the time while the 50 are in en a ement the g g 120- tubular endof shaft so ro ortioned and I to be in assembled posi- 1 The distancewhich the 11c i could be formed on both the shaft12 and rack ing up set13. being unscrewed from pin At the same time, shaft 12 is 28. When theshaft has been turned sufficiently so that the threads of the set 13become disengaged, threads 29 and 30 also become disengaged. Furtherrotation of shaft 12 causes the threads comprising the set to becomeengaged. At this point tooth54 is in the position shown in Fig. 15, thatis, it has just passed over rack 17. When the shaft 12 is rotated fromthis position with threads 50 in engagement, the shaft moves downwardlyfurther than it would had threads 13 remained in engagement, due to thegreater pitch of threads 50. Hence, by the time tooth 54 is turned tothe position shown in Fig. 12, Where it is about to engage recess 51 inrack 17, the tooth is further down than it would have been if threads 50of the greater pitch had not been employed. Hence, tooth .54 has betterengagement than it otherwise would have had, and better engagement thandoes the first tooth 36?; shown, in Fig. 2.

Furtherrotation of shaft 12 from the position shown in Fig. 12 causesrack 17 to move to the left, as viewed in Fig. 11. This movement causescam surface 52 to be pressed against pin 53. This causes pin 53 to moveto the left and, inasmuch as it is mounted on arm 23which is pivoted onpin 21, cap 24 is rotated to the position shown in Fig. 14. In thisposition the blade 37 andithe guard member 32 may be removed.

When it is desired to reassemble the razor, guard 32 and blade 37are'put in place on base member 15 and shaft 12 is rotated in theoppositedirection. This causes rack 17 to move to the right, as viewedin Fig. 14. This causes the lower left hand portion of the cam surface52 to press against pin 53 with the result that the pin slides up onthis surface and causes arm 23 and cap 24 to rotate in a clockwisedirection about pin 21 until it comes to. rest on shoulders 27 ofprojections 26. 1

At this point tooth 54 leaves recess 51 and "by the time it has comeback to the position shown in Fig. 15, threads 50 have become disgaged.Further rotation of the shaft 12 engaged and threads 13 have becomeengaged. At the same time that threads 13 becomeengaged, threads 29 and30 also become encauses it to move upwardlywith respect to tubular part11 and flange 31 forces guard member 32 and blade 37 upwardly againstcap 24. thus clamping the blade between the cap and the guard member.

J It will be apparent that the arrangement of threads 13 and 50disclosed in the embodiment illustrated in Figs .,11 through 15 may. beemployed with equal advantage in the other two embodiments illustrated.

It will be noted that, in each of the embodiments, the hinge comprisingarm 20, pin 21 and arm 23 is located underneath the base member 15. Thishinge could be located beyond the end of the base member, that is vdirectly below the vertical part of arm 23. 7

However, an advantage is gained by locating it in the position shown.This advantage is that the cap is better balanced the nearer on one sideof the hinge as on the other and.

very little forcewould be required to rotate the cap. By locating thehinge some distance inwardly from the .end of the cap, the cap isbalanced to some extent. Besides this,

hinge so located is protected from injury and results inthe razor havinga neater appearance.

While the guard in the embodiments illustrated is not of thereversibletype, it is obvious that a reversible guard, such asis'disclosed in my above identified copending application, could beemployed without in any vention. r

While I have shown and described three embodiments of my invention it isto be understood that they are for illustrative purthe way departingfrom the spirit of this inposes only and are not. to be" considered aslimiting the scope of my invention, which is to be 'determined'by theappended claims viewed in the light of the prior art. What I claim is:

1.,In a safety razor'of her, a cap rotatably mounted with respect tosaid member, a guard having an operative I the double edged fleiibleblade type, a cap supporting mem-- with the cap rotating means and withsaid.

cap for first rotati g the cap into blade clamping position with espectto said guard and then holding the cap in said position.

2. In a safety razor of the-double'edge flexible blade type, a basemember, a cap pivoted at one end tot-he base member, a

cap rotating means, and 'a member engageable SUCCGSSIVBlY with the capand the caprotating I means.

3.- In a razor, a handle comprlsinga first tively rotatable, a basemember secured to said first part, a cap hinged to said basememher, andcap rot tingmeansmne of said parts upon rotation being enga eablesuccessively first part, a cap hinged to said base member, a motiontransmitting-member mova'bly supported by said base member, means onsaid guard between the base member and the cap,

part anda second part, said parts being rela-- I second part forengaging andmoving said motion transmitting member upon relativerotation of said parts, means secured to said cap for engaging saidmotion transmitting member so that movement thereof causes rotation ofsaid cap with respect to said base 'member, and means on said cap fordirect engagement with said second part.

5. In a razor, a handle comprising'a first part and a second part, saidparts being relatively rotatable, a base member secured to said firstpart, a cap hinged to said basememher, a guard having guard teethonopposite edges supported by said base member, a double edged bladeadapted to be clamped between said cap and said guard, a rack slidablysupported by said base member, said rack having one or more teeththereon, said second part having one or more teeth formed thereon forengagement with said rack, and means secured to said cap for engagingsaid rack so that movement of said rack causes rotation of said cap withrespect to said base member. i

6. In a razor, a handle comprising a first part and a second part, saidparts being relatively rotatable, a base member secured to said firstpart, a cap hinged to said base member,

a rack slidably supported by said base member, said rack having one or.more teeth formed thereon, said second part having one.

or more teeth formed thereon for engagement Wlth' sa1d rack, sa1d rackhaving a cam sur: face, and means secured to sa1d cap fo'rcontactingsaid cam surface so that movement of said rack causes rotation of saidspect to sa1d base member.

7. In a razor,-a handle comprising a first cap with repart and-a secondpart, said parts being relatively rotatable, a base member secured tosaid first part, a cap hinged to said base-member, a rack slidablysupported by said base member, said rack having one or more teeth formedthereon, said second part having one or more teeth formed thereon forengagement with said rack, said rack being formed with an internal camsurface, and means on said cap for contacting said cam' surface so thatmovement of said rack in one direction causes rotation of said cap inone direction with respect to said base member and movement of said rackin the opposite direction causes rotation of said cap in the oppositedirection.

8. In a razor, a handle comprising a first part and a second part, saidparts being rela tively rotatable, a base member. secured to said firstpart, a cap rotatably secured to said base member,

ber, 'a double edged blade adapted to be clamped between said cap andsaid guard,'a gear secured to said cap at the axis of rotation thereof,a rack slidably supported by said base member,

part and a second second a guard having guard teeth on opposite edgessupported by 'said' base memsaid rack having one or more tatably securedto said teeth on said rack, and said second part having teeth formedthereon for engagement with teeth on said rack. 1

I 9. In af'razor, a handle comprising afirst part, said parts beingrelatively rotatable, a base member secured to said first part, a caprotat'ably secured to said base member, a gear secured to said cap atthe axis of rotation thereof, said second part having teeth formed shaftrotatably carried by said base memher, a gear secured to said shaft andmeshing with the gear secured to the cap, anda gear secured to saidshaft for engagement with the teeth on said second part.

10. In a razor, a handle comprising a first part having threads formedthereon and a second part having threads for engagement with thefirst-mentioned threads, 21 base member secured to said first part, acaprot'atl5 thereon, a

ably secured to said base member, a pin se- I cured to said cap andhaving thread-s formed thereon, one end of said second part being formedwith threads for engaging the threads onv said pin, extent of thethreads on with respect to the threads on said parts which engage witheach-other that said'second part may be disengaged from said pin whilestill engaged with said first part, and

the location and axial said pin being such means operable upon rotationof said secformed thereon, one end of said second part being formed withthreads for engaging the threads on said pin, the location and ingsuchwith respect to the threads on said parts which engage with each otherthatsaid part may be disengaged from said pin while still engaged withsaid first part,

a motion transmitting member movably su ported by said base member,means on sa1d second part for engaging and moving said motiontransmitting member upon rotation of said second part whiledisengaged'from said pin, and means on said cap motion transmittingmember so that movement thereof causes rotation of said cap with respectto said basemember.

12. In a razor, a handle comprising a first for engaging said with"respect to sand base secured to said cap and having threads,

' axial extent of thethreads on said pin bepart having threads formedthereon and a second part having threads for engagement with thefirst-mentioned threads, -a base member securedto said first part, a'caprobase member, a pin ond part may secured to said cap and having threadsformed thereon, one end of said second part being formed-with threadsfor engaging the threads on said pin, the location and axial extent ofthe threads on said pin being such with respect to the threads on saidparts with each other that said secwhich engage be disengaged from saidpin I while still engaged with said first part, a

rack slidably supported by said base member and having one or moreteeth, said second part having one or more teeth and being positioned soas to engage said rackwhen sald second part is disengaged from said pin,and means on said cap for engaging said rack so that movement of saidrack causes rotation of said cap with respect to said base member.

13. In a razor, a handle comprising a first part having threads formedthereon and-a second part having with threads for engaging the threadson said pin, the location and axial extent of the threads on said pinbeing such with respect to the threads on said parts which engage witheach other that said second part may be disengaged-from said pin whilestill engaged with said first part, a rack slidably supported by saidbase member and having one or more said second part having one or moreteeth and being positioned so as to engage the teeth on said rack whensaid second part is disengaged from said pin, said rack having a camsurface, and means secured to said cap for contacting said cam surfaceso that movement of said-rack causes rotation of -said cap with respectto said base member.

14. In a razor, a handle comprising a first part having threads formedthereon and a second part having threads for engagement with thefirst-mentioned threads, a base member secured to said first part, acaprotatably secured to said base member, a pin secured to threads forengaging said cap and havingthreads formed thereon, one end of saidsecond part being formed with the threads on said pin, the location andaxial extent of the threads on said pin being such with respect to thethreads on said parts which engage with each other that said secondpartmay be disengagd from said pin while still engaged with said firstpart, a rack slidably supported by saidbase member and having one ormore teeth, said second part having one or more teeth and beingpositioned so as to engage saidrack when said second part is disengagedfrom said pin, said rack having an internal 1 cam surface, and means onsaid cap for con- I tacting said cam surface so that movementof saidrackin/one direction causes rotation of the location other that saidsecond part may be said cap in one direction with respect to saidbase'member and movement of said rack in the opposite direction causesrotation of said cap in the opposite direction.

15. Ina razor, a part having threads formed thereon and a second parthaving threads for engagement 1 with the first-mentioned threads, a basemem ber secured to said first part, a cap rotatably secured to said basemember, a pin secured .to said cap and having threads formed thereon,one end of said second part being formed with threads for engaging thethreads on said pin, the location and axial extent of the threads. onsaid pin being such with respect to the threads on said parts whichengage witheach other that said second part may bedisengaged from saidpin while still engaged with said first part, a gear secured to said capat the axis of rotation thereof, a rack slidably supported by said basemember and having one 1 or more teeth, said gear having engagement withsaid rack, and said second part having handle comprising a first astoengage said rack when said second part is disengaged from said pin.

16. In a razor, a handle comprising a first part having threads formedthereon and a second part having threads for engagement with thefirst-mentioned threads, abase member secured to said first part, a caprotatably secured to said base member, a pin secured to said cap andhaving threadsformed thereon, one end of said second part being formedwith threads for engaging the threads on said pin, and axial extent ofthe threads on said pin being such with respect to the threads on saidparts'which engage with each disengaged from said pin while stillengaged with said first part, a gear secured to said cap at the axis ofrotation thereof, a shaft rotatably carried by saidbase member, a gearsecured to said shaft and meshing with the gear on said cap, anothergear secured to said shaft, and said second part having teeth and beingmovable so as to engage the last-mentioned gear when said second part isdisengaged from'said pin. v

' 17 In a razor, a handle comprising a first part and a second part, twosets of threads on said parts for providing threaded engagement betweenthe two parts, the pitch of one set being different than the pitch ofthe other set, said sets being so spaced that, upon relative rotation ofthe two parts, the threads of one set come into engagement after thethreads of the other set have become disengaged, a base member securedto said first part, a cap rotatably secured to said base member, a pinsecured to said cap and hav- I formedwith threads for engaging thethreads gage at the same time, and means operable upon rotation of'saidsecond part when the on said parts for threads havingthelarger pitch areinterengaged for rotating said cap with respect to said base member.

18. In a razor, a handle comprising a first part and a second part,'twosets of threads ment between the two parts, the pitch of one set beingdifferent than the pitch ofthe other set, said sets being so spacedthat, upon'relative rotation of the two parts, the threads of one setcome into engagement after the threads of the other set have becomedisengaged, a base member secured to said first part, a cap rotatablysecured 'to said base member, a pin secured to said cap and havingformed thereon threads of the same pitch as the threads of the sethaving the smaller pitch, formed with threads for engaging the threadson said pin, all of the threads of the smaller pitch being so spaced asto engage and disengage at the same time, a motion transmitting membermovably supported by said base member, gaging and moving said motiontransmitting member upon rotation of said-second part when the threadshaving the larger pitch are interengaged, and means on said cap forengaging said motion transmitting member so that movement thereof causesrotation of said cap withrespect to said base member.

19. In a razor, a handle comprising a first "part and a second part, twosets of threads on said parts for providing threaded engagef mentbetween the two parts, the pitch of one set being different than thepitch of the other set,'said sets being so spaced that, upon relativerotation of the two parts, the threads of one set come into threads ofthe other .set have become disengaged, a base member secured to saidfirst part, a cap rotatably secured to said base member, a pin securedto said cap and having formed thereon threads of the same pitch as thethreads of theset having the smaller pitch,- one end of said second partbeing formed with threads for engaging the threads on said pin, all ofthe threads of the smaller pitch being so spaced as to engage anddisengage at the same time, a rack slidably supported by said basemember, said rack having one or more teeth thereon, said second parthaving one or more teeth formed thereon and so located as to engage saidrack when the threads having the larger pitch are interengaged, andmeans on said cap for engaging said raclt so that movement of said rackcauses rotation of said cap with respect to said base member.

20. In a razor, a handle comprising a first providing threaded engageoneend of said second part being means on' said second part forenengagement after the on said parts for providing threaded engage- 4ment between the two parts, the pitch of one set-being difierent thanthe pitch of the other set,said sets being so spaced that, uponrelativerotation of the two parts, the threads of one set come having,

one or more teeth thereon, said second part having one or more teethformed thereon and so located as to engage said rack when the threadshaving the larger-pitch are interengaged, said rack being formed with acam surface, and means on said cap for contacting said cam surface-sothat movement of said rack causes rotation of said cap withrespect tosaid base member. 1

21. In a safety razor, pivoted at one end to the base member, a guardbetween the base member and the cap, a double edged flexible bladeadapted to be clamped between the guard and thecap, cap-- rotatingmeans, and a member engageable a base member, a cap I successively withthe cap rotating means and with the cap for first rotating the cap intoblade clamping position and then holding the cap in said position. I

22. In a razor, a handle comprising a first part and a second part, saidparts being relatively rotatable, a base member secured to saidfirst-part, a cap hinged to said base member, a rack slidably supportedby said base member, saidrack having'one or more teeth thereon, saidsecond part having one or more teeth formed thereon for engagement withsaid rack, means secured to said cap for en- 7 a in said rack so thatmovement of said 55 a a: a

rack causes rotation of said cap with respect to said base member, andmeans on said cap .for direct engagement withsaid second part.

23. In a razor, a handle comprising a first part and a second part, 832dparts being re1atively rotatable, a base member secured to said firstpart, a cap hinged to said base member, a rack slidablv supported bysaid base member, said rack having one or more teeth formed thereon,said second part having one or more'teeth'formed thereon for engagement.with said rack, said rack having a cam sufface, means secured to saidcap for contactingsaid cam surface so that movement of said rack causesrotation of said-cap with respect to said base member, and means on said'cap for direct engagement with said second part.

a I into engagement after, the threads of the'other set have becomedisen said guard toward said cap forclamping a 24;. In a ra'zor, ahandle comprising a first part and a second part, said parts beingrelacap rotatably secured to said base'member, a gear secured to saidcap at the axis of rotation thereof, a rack slidably supported by saidbase member, said rack having one or more teeth, said gear havingengagement with teeth on said rack, said second part having teeth formedthereon for engagement with teeth on said rack, and means .base membersecured to and a guard-supported by said base member, said second partbeingadapted upon rotation to move said guard toward said cap forclamping ablade therebetween;

In testimony whereof, I have affixed my signature.

HARRY SWAN.

on said cap for direct engagement with said second part.

25. In a razor, a handle comprising a first part and a second part, saidparts being relatively rotatable, 'a base member secured to said firstpart, a cap rotatably secured to said base member, a gear secured tosaid cap at the axis of rotation thereof, said second part having teethformed thereon, a shaft rotatably carried by said base member, a gearsecured to said shaft and meshing with the gear secured to the cap, agear secured to said shaft for engagement with the teeth on said secondpart, and means on said cap for direct engagement'with said second part.v k

26. In a"razor, a handle comprising a first part and a second part, saidparts being relatively rotatable, said first part, a cap, mounting saidcap on said base member, said hinge being located beneath, and inwardlyfrom one end of, said base member, and a guard supported by said basemember, said second part being adapted upon rotation to move said guardtoward said cap for clamping a. blade therebetween.

a 'base member secured to 3 a hinge for rotatably 27 In a razor,a-handle comprising a first I part and a second part, said parts beingrelatively rotatable, a base member secured to said first part, a cap, ahin e for rotatably se member, said supported by said base member, andcap rotating means, said second part being en able with said caprotating means and said guard for rotating'said cap and moving bladebetween said guard and'said cap.

28. In a razor, a handle comprising a first part and a second part, saidparts being rela tively rotatable, a base member secured to said firstpart, a cap, a hinge for rotatably mounting said cap on said basemember, said hinge being locatedben'eath, and. inwardly a guard ageith

. from one end of,-said,base member, a motion I transmitting membermovably supported by said base member, means on said second part forengaging and moving said motion transv mittingmember upon relativerotation of said parts, means secured to said cap for engaging saidmotion transmitting member so that. movement thereof causes rotation 'ofsaid cap with respect to said base member,

